Stopped smoking 7 weeks ago, its easy all in the head, really 3 days of hell then easy street. What is hard is staying quit, done it maybe 5 times over 18yrs, even did 2 yrs once.
But smoking is not that hard to stop you just have to be in the frame of mind to do it, and go in determined. Going cold turkey works for me but try the patches or gums, but once you do you feel great and your running and endurance will improve.
Good luck guys and gals, it really is hard for the first 3 days and then it does get easy. One way of keeping stopped is what ever you spend on cigs you put in a jar, and when you have enough buy a pair of new running shoes or a new garmin , then u have something to show rather than smelly breath and clothes. lol.
I mean it give up your running will improve